The following data represents the GPA of a sample of 15 students enrolled in a history clas 3 4 3 9 4 0 2 8 3 5 2 6 3 2 3 6 1 9 2 1 2 0 3 3 2 4 1 8 3 2 a Find the first quartile Do not include the median in the calculations Answer b Find the third quartile Do not include the median in the calculations Answer c Find the mean Round to 2 decimal places